PM2.5 Redesignation Request for the Metropolitan Washington,D.C. Region
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Transcript of PM2.5 Redesignation Request for the Metropolitan Washington,D.C. Region
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PM2.5 Redesignation PM2.5 Redesignation Request for the Request for the
Metropolitan Metropolitan Washington,D.C. RegionWashington,D.C. Region
Joan RohlfsJoan RohlfsChief, Air Quality PlanningChief, Air Quality Planning
Metropolitan Washington COGMetropolitan Washington COG
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OverviewOverview
Background: PM2.5 Annual StandardBackground: PM2.5 Annual Standard Redesignation: StepsRedesignation: Steps Maintenance Plan Requirements Maintenance Plan Requirements Transportation Conformity RequirementsTransportation Conformity Requirements New 24-hour PM StandardNew 24-hour PM Standard
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Metropolitan Washington DC-MD-VA Region Fine Particle Nonattainment Area
Annual Standard= 15 µg/m315 µg/m3
District of Columbia
Suburban Maryland (Montgomery, Prince George’s, Frederick, Charles Counties)
Virginia (Fairfax, Arlington, Loudoun, Prince William Counties, City of Alexandria
EPA designated the entire 8-hour ozone nonattainment area EPA designated the entire 8-hour ozone nonattainment area for PM, but excluded Calvert County.for PM, but excluded Calvert County.
EPA designated the entire 8-hour ozone nonattainment area EPA designated the entire 8-hour ozone nonattainment area for PM, but excluded Calvert County.for PM, but excluded Calvert County.
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Annual PM Planning HorizonAnnual PM Planning Horizon
Apr 2008
Apr 2008
Apr 2010
Apr 2010
Jul 1997
Jul 1997
PM 2.5 Standard First
Promulgated
Nov 2004
Nov 2004
Final Nonattainment Designations Issued
SIP due to EPA
Attainment Deadline
April 2005
April 2005
Final Nonattainment Designations Effective
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Redesignation
in
4 Easy Steps
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STEP 1STEP 1
Two Design Values with Clean Data: Air Two Design Values with Clean Data: Air Quality data shows attainment of Annual Quality data shows attainment of Annual PM2.5 standard for 2003-2005 and 2004-PM2.5 standard for 2003-2005 and 2004-20062006
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Annual PM2.5 Design Value(Washington Region)
16.5
17.1
15.8
15.1
14.8 14.8
14.014.515.015.5
16.016.517.017.5
1999-2001 2000-2002 2001-2003 2002-2004 2003-2005 2004-2006
Year
Des
ign
Valu
e (µ
g/m
3)
* 2004-06 data is draft
Annual PM2.5 Standard: 15 ug/m3
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STEP #2STEP #2
#2 #2 Prepare Redesignation Request Prepare Redesignation Request and Maintenance Plan and Maintenance Plan
2007
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STEP #3STEP #3
SUBMIT Redesignation Request and SUBMIT Redesignation Request and Maintenance Plan to EPA by APRIL 15, Maintenance Plan to EPA by APRIL 15, 20082008
If late, region is subject to penalties for If late, region is subject to penalties for failure to submitfailure to submit
2008
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STEP #4STEP #4
EPA approves Redesignation EPA approves Redesignation RequestRequest Process may take up to 18 months after Process may take up to 18 months after
submittal submittal • earliest date: December 2008earliest date: December 2008• Latest date: 2010Latest date: 2010
2010
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WHAT IS A MAINTENANCE PLAN?
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Purpose of Maintenance PlanPurpose of Maintenance Plan
To demonstrate that the region will To demonstrate that the region will maintain the annual PM2.5 standard for 10 maintain the annual PM2.5 standard for 10 years after redesignationyears after redesignation
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ComponentsComponents
1)1) Attainment InventoryAttainment Inventory
2)2) Maintenance Demonstration (inventory)Maintenance Demonstration (inventory)
3)3) Monitoring NetworkMonitoring Network
4)4) Verification of continued attainmentVerification of continued attainment
5)5) Contingency Plan Contingency Plan
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SIP RequirementsSIP Requirements
• Emission InventoriesEmission Inventories• Rate of Progress Rate of Progress • Conformity/Mobile BudgetConformity/Mobile Budget• RACM AnalysisRACM Analysis• Contingency MeasuresContingency Measures• Attainment DemonstrationAttainment Demonstration
Maintenance PlanMaintenance Plan
NO
No Photochemical Modeling required
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PM 2.5 ConformityPM 2.5 Conformity
• Must demonstrate PM 2.5 conformity for PM Direct and Precursor NOx.
October 2007
• Calculate emissions using MOBILE 6.2
• Plan will establish mobile emissions budgets for direct PM and PM precursors determined to be significant contributors to PM pollution.
•Maintenance Plan will establish mobile budgets for interim year and last year of maintenance plan.
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Emission Inventory• Annual for PM Direct and all PM Precursors
(NOx, SO2, Ammonia, VOCs).
Maintenance Plan ComponentsMaintenance Plan Components
Rate of Progress Demonstrations• Not required if attain within 5 years.Conformity/Mobile Budget
• Establish budget for PM and PM Precursors determined to contribute significantly.
RACM Analysis• Identifies Reasonably Available
Control Measures for SIP• Explains why other measures are
not reasonably available
Contingency Measures• Measures to be implemented if
region fails to attain by 2010 or does not demonstrate required progress
• New formula for reduction requirement [(2009-2002)/7]
Attainment Demonstration and Weight of Evidence
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Emission Inventory• Annual for PM Direct and all PM Precursors
(NOx, SO2, Ammonia, VOCs).• Attainment Year: 2005• Interim Year (2010 or 2012?)• 10 Year Horizon after Redesignation (2020)
Maintenance Plan ComponentsMaintenance Plan Components
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Maintenance Plan ComponentsMaintenance Plan Components
Rate of Progress Demonstrations
• Must track progress of maintenance plan for an interim year (2010 or 2012)
• No established rate of reduction requirement
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Maintenance Plan ComponentsMaintenance Plan Components
Conformity/Mobile Budget• Establish budget for PM and PM Precursors
determined to contribute significantly.
• Establishes budgets for interim and outyear
2020
Maintenance PlanComponentsMaintenance PlanComponents
RACM Analysis• Not Required
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Maintenance Plan ComponentsMaintenance Plan Components
Contingency Measures• Measures to be implemented if
region fails to attain by 2020• Region sets trigger for contingency
measures
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Maintenance Plan ComponentsMaintenance Plan Components
Maintenance Demonstration• Attainment Inventory approach• Photochemical Modeling for supporting
evidence (2012, 2018)• Control strategy reductions come from
permanent, enforceable measures
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and Transportation Conformity DeterminationsSpring Summer Fall 2007 Winter 2007 Spring 2008
2007
Inventory DevelopmentDetermine Base Year, OutyearsBase Year Inventory: 2005
P
Control MeasuresMaster list of control measuresPriority measures for PlanContingency Measures
Modeling Analysis/Weight of EvidencePrecursor Significance Determination?
Review Regional Haze Modeling Results for 2018Weight of Evidence
Conformity
Complete conformity 2007 CLRP FY2008-2013 TIP Develop PM2.5 mobile budgets (SIP)
Draft Redesignation /Maintenance Plan Document Public Meetings on control strategy
Prepare Draft Attainment Maintenance Plan Adopt Draft Maintenance Plan (MWAQC) Public Hearings Approve Maintenance Plan for PM2.5 Transmit Plan to IAQC States Submit Plan to EPA
Plan/SIP Deadline: April 2008
Annual PM2.5 Maintenance Plan Schedule
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24-hour PM 2.5 24-hour PM 2.5 StandardStandard
2009
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24-Hour PM2.5 Design Value (Washington Region)
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41
45 44
42
30
35
40
45
50
1999-2001 2000-2002 2001-2003 2002-2004 2003-2005
Year
Des
ign
Val
ue
(µg
/m3)
24-Hour PM2.5 Standard - 35 µg/m3
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Annual PM2.5 Design Value(Washington Region)
14.8
15.1
15.8
17.1
16.5
14.0
14.5
15.0
15.5
16.0
16.5
17.0
17.5
1999-2001 2000-2002 2001-2003 2002-2004 2003-2005
Year
De
sig
n V
alu
e (
µg
/m3
)
24-Hour PM2.5 Design Value (Washington Region)
37
41
45 44
42
30
35
40
45
50
1999-2001 2000-2002 2001-2003 2002-2004 2003-2005
Year
Des
ign
Val
ue
(µg
/m3)
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24-Hour PM Planning Horizon24-Hour PM Planning Horizon
Apr 2010
Apr 2010
Apr 2015
Apr 2015
Sep 2006
Sep 2006
PM 2.5 Standard Lowered
Nov 2007
Nov 2007
State Recommendations for Designations
Designations Effective
Attainment Deadline
Nov 2009
Nov 2009
EPA Designations SIPs due to EPA
Apr 2013
Apr 2013
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For More InformationFor More Information
mwcog.org/environmentmwcog.org/environment
mwcog.org/transportationmwcog.org/transportation
epa.govepa.gov
airnow.govairnow.gov
http://www.epa.gov/otaq/transp/conform/conf-regs.htm
EPA Redesignation Guidance: Calcagni Memo,”Procedures for Processing Requests to Redesignate to Attainment,” USEPA, Sept.9, 1992.